[Evaluation of kidney parenchyma infection during renal lithiasis].

In 39 patients with renal lithiasis bacteriological investigation of middle stream urine, renal pelvis, renal calculi and kidney parenchyma were performed. In nine of patients presence of bacteria in kidney parenchyma was observed. Infection of kidney parenchyma in six cases was accompanied by bacteriuria in samples from middle stream urine and from renal pelvis. In every case of kidney parenchyma infection, presence of bacteria in renal calculi was observed. In 30 patients with sterile renal parenchyma, bacteriuria was found in 17 cases from middle stream urine and from renal pelvis. In these cases kidney calculi were also infected. It was found that in case of kidney parenchyma infection renal calculi were also infected, but urine from middle stream and renal pelvis can be sterile.